however: the built in assumption is that there are no alternatives that solve the problem
True, but pretty much all philisophical arguments are fairly abstract.
Especially when you get down to moral positions and intangibles like good and evil.
I would say that Evil is more in making the easiest decision rather than the obvious one. Look at politicians, they will invariably take the course that will offend the least people rather than, as you say, the truly hard decision.
Of course I think that we are rather cynical about politicians here anyway.